Borla 08-14 Subaru STi / 11-14 WRX Catback Exhaust - 140312 fits_2009-2013`Mazda`6 Dyno-proven gains of up to

Dyno-proven gains of up to 4hp and 4 ft-lbs of torque

Special engineered mounting brackets also serve as ducting to channel air to coolers

Introducing the first and finest aftermarket exhaust system for the G90 M5

precise lines with vibrant high-saturation colors using premium imported film technology for stunning visual impact

Borla 08-14 Subaru STi / 11-14 WRX Catback Exhaust - 140312 fits_2009-2013`Mazda`6 Dyno-proven gains of up toBorla(r) Performance offers a quad exit Cat Back(tm) exhaust for the venerable 2008 2014 Subaru WRX STI. This race inspired system (PN140312) checks all the boxes on every Subaru enthusiasts hit list, taking this flagship to an even higher realm, of performance. For starters, Borla(r) engineers upgraded the Stir's exhaust plumbing from 2. 5" to 3" in diameter. The resulting increased airflow through the turbocharged powerplant provides horsepower